252367021 has 2 divisors, whose sum is σ = 252367022. Its totient is φ = 252367020.

The previous prime is 252367007. The next prime is 252367051. The reversal of 252367021 is 120763252.

252367021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 252364996 + 2025 = 15886^2 + 45^2 .

It is a cyclic number.

It is not a de Polignac number, because 252367021 - 2¹⁵ = 252334253 is a prime.

It is a super-2 number, since 2×252367021² = 127378226576828882, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252367051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126183510 + 126183511.

It is an arithmetic number, because the mean of its divisors is an integer number (126183511).

Almost surely, 2^252367021 is an apocalyptic number.

It is an amenable number.

252367021 is a deficient number, since it is larger than the sum of its proper divisors (1).

252367021 is an equidigital number, since it uses as much as digits as its factorization.

252367021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 252367021 is about 15886.0637352366. The cubic root of 252367021 is about 631.9424560717.

The spelling of 252367021 in words is "two hundred fifty-two million, three hundred sixty-seven thousand, twenty-one".